Combination sand-pump and bailer



Nov. 17, 1931. c. F, RIGBY COMBINATION SAND PUMP AND BAILER Filed May 21. 1929 2 Sheets-Sheet FIG. 1I

INVENTOR Clark E Rigbg.

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C. F. RIGBY COMBINATION SAND PUMP AND BAILER Filed May 21. 1929 2 Sheets-Sheet INVENTOR CorK Rl'gbg by @34M hn's attornegs v Nov. 17, 1931.

M12 IIIIH m C .is nl l Patented Nov. 17, 1931 CLARK F. RIGBY, Vor BUTLER, PENNSYLVANIA i COMBINATION SAND-PUMP AND BAILER Application inea may 2,1,

This invention relates to a combination sa11d-pump and bailer.

Combination sand-pumps and bailers, which are composedof telescoping sections are not new in the art. When it is desired to pump sand, both the inner and outer telescoping sections are functionally employed, and when the device is: used as a bailer, only the outer section functions."4 That is, it is custom-g l0 ary to lock the inner and outer sections in collapsed position'when the device is to be used to remove vonly water. In the latter use,

the inner section has no utility. y o

The object of this invention is to providea 15 telescoping sand-pump" which is provided with means which permit the` ready'disconnection and removal of the inner telescoping section thereof to permit the out-er section to be employedas albailer.

A further ob]l ectofl the invention is to provide a novel and simple method of fixing the foot-piece of the pump in the outer section thereof.

r Al still further object of the invention is to provide novel valving means, which operate efficiently, and'which have a minimumof machine operations necessary for their manu;v facture. 1

In the accompanying drawings Figure I l is a vertical broken sectional view through the device of the present invention, as it is arranged for pumping sand; Figure II is a sectional viewthrough the lower portion of the same, showing the inner telescopinig sec+ tion in its raised position at'the end of the suction stroke; Figure .III isa vertical broken sectional view through the presenty combination pump, showing the inner sectionthereof at th-e start of the suctionI stroke.; Figure IV is an enlarged side elevation of the foot valve of the present invention; Figure V is 'a sectional view ofthe same. taken on the line V-V of Fig. IV; and Figure VIis aseotional view. showing the device arranged asa bailer.

The device of thepresent invention, when used as a sand-pump, comprises an outer tubular member l and an inner tubular member 2, which telescopes or slides within the outer t member. This general arrangement and its 1929. serial No. sensa operation is illustrated and described in-my Patent No.`1,158,292,' dated Octob'eri26, 1915, but certain improvementsare embodied in the present invention.

'I-Ieretofore, there has been machining necessary to aiiX the foot-piece 3 in the member' l; The presenta'rrangement needs very little machining, and it is easily positioned in place. It will benoted that the upper portion of the Vfoot-pieceis provided with two tapered annular surfaces 3a. A rubber sleeve 4 is provided with correspondingly tapered annular portions 4a,"into' which the upper portion of the foot-pieceis'placed. This assemblage is then pressedinto the tubular member'l, as illustrated, and obviously, anytendency forthe member 3 toy withdraw from this position increases the frictional engagement between the memberf and the tubular member l. This feature satisfactory. A The lower end of the inner member 2 is closed by a valving base, which may be riveted or welded into thesaid inner member. i AA rubber ring 6 is sprung into the Vconsiderable has proven very grooveprovided in the member 5and serves, y

ina manner similar lto piston rings,to" give a tight or close sliding fit with the inner'sury face of the member l. The valve seating portionla of the member 5' is provided with openings 5b, which are--normally'closed by the rubber ring or torus 7;' It may be'noted that the member 5-"is ,formed ,integral iwith, a sleeve portion 5o which istopped by the iiange portiond. f, The sleeve portionguides the torus shaped valve'memberv 7 as it rises from its normal-position, andthe `ia'nge 5d prevents the same from becoming dislodged from the sleeve. It is offp'racti'cal importance that the flange 5d bef of a-diameter which-willallow the rubber lvalving member 7 tobe expanded and forced'overthev same. This is for the reason that, whenamember' 7 becomes `wornand leaky, anew'valve member, such as 7, may be readily sprung'into place lwithouttaking the apparatus apart.`

As is Vusual in devices ofthis nature, a een# tral rod 8 is connected to a 'valve in -the foot-v piece 3. Infthe present device the rod Sis threaded into the U shaped bracket 9, which l 8. YBy means of a bolt 11 the eye bolt is pivotally connected to the valve member 12. This bolt 11, it will be noticed, is held in po sition -by a cotterpin 13, which may be quickly and easily removed to disconnect the eye bolt fromthe valve 12 so that theinner portion of the pump may be withdrawn aidleav'e the outer portion to serve as abailer.

The structureV of the valve member 12 is of prime importance. As-may be seen to advantage in Figures IV and V of the drawings, there is provided a lower portion 14, which is provided with an annular groove 15 for the reception of an "integral rubber ring 16. Thisirubberring lor torus may be readily forced over the bottom of the portion 14 to seat in the .groove 15 ksimilar to the manner in whichvthe ring 6 is positioned in the member 5, v'explainedsupra VTWhen this valve is in` its raised or closed position, as shown in Fig. -l1, the ring 16 is pressed against the I tapered surfacec, andgives an eiic-ient closureto the outer member 1. Since the surface Se is tapered,`there is no tendency for sandordirt to causev the valve to stick in its closedposition. y y Y Y Y, lng-the yoperation ofthe device as a sand pump,the sand-line, not'shown, is attached tothe U shaped member or bail 17, which is fixed 'withinfthe member 2 by means of the head` device 18. The Vdetail structure and operation of. this head device and bail will not be described in detail herein, since its complete illustration and description appears .ing'my copending application Serial N`o.364,7 59,filed May 21, 1929.

Y When the device is used as a sand pump, and it is being'lowered into a well, the telescoping `sections' areexpanded, as illustrated in Fig. IT. l That is, the vsand-line is xed by 'the member '17 to theinner section 2, which withdraws from the member 1 until the spring 19 arrests themovement by'com-y inginto contact with the stop 8a of the rod 8. This'obviously raisesjthe valve member 12 to seatinthe foot-piece3- To prevent all ofthe weight from being borne by the vring 1.6, a shoulder 14a on the portion 14 oftheV 'member -12 bears against a suitable seat 3b in the member 3.- l `After the pump is lowered and the footpiec'estrikes the bottom of the well A, the inner member 2 lowers Vand telescopes into the member 1, the ldrop valve 12 lowering, due toits weight and that of the rod 8. As shown in Fig. I, the spr`ing19 is moved away from the stop 8a, In the ordinary drop valve of this typefit oftendiappens that the Vgas and liquid pressure below the valve in its closed or raisedposition prevents the same from lowering. `'The present valve 12,. however, is designed to-.prevent this.

resaca?,

In the portion 14 of this valve there is a central opening 14?), which is normally closed by the solid rubber ball 20, and if any pressure below the valve member 14 exists, the ball 20 rises and allows the valve to drop to its intake position, shown in Fig. I. It will be noted that there are three legsror guide pieces 21, which constrain the ballf20 in a region therebetween.

The rubber composition of the ball 2O is relatively elastic. Obviously, the unmachined upper periphery of the opening 14h Vmaybe tightly sealed by the rubber mass 2() when water and sand is drawn into the pump member 1. This is for the reason that the resultant pressure of the water and sand reacts on top of the ball 2O when the valve member 12 is closed. The spaces between the adjacent legs 21 are such that as the ball 2O becomes worn or rotte'd, it may be removed from the member 12, and a new o ne .forced tl'irough one of the said spaces to takeits place. These spaces are ust wide enough to permit a ball to be pressed through them, and it is possible to do this Vonly when the ball is composed of a relatively elastic rubber. That is, it must be possible to distort .the ball to force it into the region wherein it seats. -The ballis of such a diameter, that once it has been pressed into. the said region, it will not work its way out between the legs 21.

Thus it may be understood that the struc ture of valve member'12is of such a nature that little machine work is required in its manufacture, andin addition, it is avery simple operationto change the ball 20 and the ring 16. The pump does not have to be taken down to make these changes.

vWhen the footspiece 3 strikesthe bottom of the oil well, and the valve 12 drops, as said, the inner member 2 telescopes withinl the member 1 until the U bracket 9 engages Yand raises the valving member 7, asshown in Fig. III. In' this position all of the ports are open, and the water at the bottom of the well A mayV flow-in through the foot-piece 3 into the member After the'pump has been at the bottom of the well long enough to fill, the'sand-line is quickly tightened and lifted. This causes the innerV member 2 to withdraw from the member 1, and this action violently sucks a mixture of sandv and water into the member 1. 'When the spring '19, which is supported on flange 5cl of the member 5 strikes the Vstop 8a, the valve member 12 rises and closes to retain the sand and water in the aforesaid member,`andthe continued hoisting of the sand-line lifts the whole device.

l The device is ultimately lifted, and swung from the well. It is then lowered until `the foot-piece 3 strikes the `dumping floor. The same action of the valves take place to discharge the pumps, as takes.v place when the pump strikes the bottom ofthe well.

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#Inorder to remove the inner portion of the pump topermit'fthe outer portion to be employed as a bailei, it is simply necessary to remove the Cotter pin 13 and withdraw the bolt ll. The inner member2 and the iod 8 with its ixtures may then be readily removed. The head 18 may then' be locked into the outer member l, and the rod 8 may be unscrewed from the bracket9 and removed from lwithin the member 2. It may-then b e reassembled inthe bracket 9 andreconnected to the valve member 12. If desired, however, van auxiliary' integral eye `rod 22 `may be connected tothe member 12, asshown in Fig. VI. rIhis will save the time and labor odisconnecting the rod -8 from -witliin the member 2. The upper end of the rod 22 terminates in a stop head 22a, which rests in the tubular member. 23. A spring 24 prevents violent shocks between the tube closure 23a and the stop 22a, when the sand-line is tightened to lift the bailer.

The sand-line is attached in any suitable manner to the top of tube 23. B removing the inner member 2 from the evice, it is very much lightened for its use as a bailer, and is therefore much more desirable than combinations of this type now in use.

What I claim is: t

l. In a sandpump having telescoping cylinders adapted to removably enter a well,

a. hollow inlet foot-piece for the outer of said cylinders, said foot-piece having an outer tapered surface to engage a member oi resilient material in the bottom of said outer cylinder to frictionally retain the foot-piece in position, an annular tapered surface within the foot-piece, a shoulder within the foot-piece adjacent the latter tapered surface, a valve member slidable within said foot-piece, said valve member having an annulus of resilient material in a groove therein to close against the tapered portion within said footpiece, and a shoulder on the valve member to seat against the shoulder within said foot-piece.

2. In a sand-pump having` telescoping cylinders adapted to removably enter a well, a hollow inlet foot-piece for the outer of said cylinders, said foot-piece having an outer tapered surface to engage a member of resilient material in the bottom of said outer cylinder to frictionally retain the foot-piece in position, an annular tapered surface within the foot-piece, a shoulder adjacent the latter tapered surface, a valve member slidable in said foot-piece, said valve member having an annulus of resilient material in` a groove therein to close against a tapered portion within said foot-piece, a shoulder on the valve member to seat againstthe shoulder within said foot-piece, a closure member for the bottom of the inner of the telescoping cylinders having' an annulus of resilient material therein to form a sliding fit between the two cylinders, ports in said closure mem- Vtapered bore to close the same.

ber, and a torus of rubber arranged to kvalve said ports in said closuremember.

3. In a` Y sand-pump having telescoping cylinders adapted to removably enter a well, a hollowinlet foot-piece for the outer of said cylinders, said :toot-piece' having an outer tapere'dsurface to engage amember of resilient material in the bottom of said outer cylinder to frictionally retain the footpiece in position, an annular tapered surface within the footpiece,a shoulder adjacent the latter tapered surface, a valve member slidablein said foot-piece, said valve member having an annulus of resilient material in a groove therein to sea-t against a taperedV portion within said foot-piece, a shoulder on the valve member to engage the shoulder within said foot-piece, a closure member for the bottom of the inner of the telescoping cylinders having an annulus of resilient maf terial therein to form a slidingflit between the two cylinders, ports in saidclosure member, a torus ofrubber arranged kto valve the ports in said closure member, an operative connection between the inner cylinder and the foot-piece valve member, andrmea'ns'on said operative connection to engage and unseat the torus/of resilient material arranged to valve the Iclosure member aforesaid.V

' U 4. In a. foot-piece for a sand-pump and bailer the combination of a valve `member slidable therein, `an annulus of resilient material mounted iny a groove in said valve member, and a tapered bore portion within said foot-piece having anfadjacent shoulder por*- tion, said valve having a shoulder and vbeing movable toV bring said shoulder int-o ,Contact with the shoulder portion within the footpieceand said annulus into contact with said 5. A valve member for a sand-pump and bailercomprising a. base portion, a ring of 'resilient material in a groove in .said base portion, a central opening through said base e portion, a resilient ballfreely seating over il and closingsaid opening, guiding members to laterally constrain said ball, and an upper portionon the valvemember connected to an operating rod, said upper portion and said base portion being integrally interconnected by said guiding members.

6.1A valve member for a sand-pump yand bailer comprising a base portion, a ringof resilient material in a groove in said base portion, acentral opening through said base por- 1 tion, a ball of resilient material freely seating over and closing said opening, spaced guidingmenibers to laterally constrain said ball,

the spaces between the guiding members being of a width suiiicient to'permit the ball to be forced'therethrough and of insufficient width to permit the ball to pass therethrough without considerableexternal force, and an upper portionon thefvalve member connected to anoperating rod, said upper portionand said ybaseportion being integrally interconnected by said guidingmembers. f i

7. In a foot-piece for a sand-pump and baiier the combination of a valve member slidable-therein, said valve comprisinga base portion, 4a ring of resilient material in a groove in said base portion, a cent-ral opening through said base portion, a. rubber ball freely seatingcver and closing said opening,

guiding members lto laterally constrain said ball, an upper portion on the valve member teni of said section, 'a valve yrod .slidably passing` through saidmember, a groove contai-ningfaresilient torus adjacent the lower periphery oi'i said member, valve ports in the member, a ring of .resilient materialrnormallyclosing said ports, and means on said valve rod to raise said rino'.

9; In a'valving and closure crevice for the Vinner -telescoping section of a sandepump therombination of a member aIiXed to the bottom of said section, a valve rod slidably passing through4 said member, a groove con taining al resilient torus acent the lower periphery of saidvfmember, valve ports in Vthe member, a torus of resilient material normally closing -said'ports and means-on said valve rod larranged to pass through said ports and maintain the said torus away from theports lto open the same.l 3

l0. In a valving and closuremeiiiber 'for the innervtelescoping section of a sand-pump a groove to receive a ring of resilient material adjacent its lower periphery, a sleeve'portion topped `by a iange portion on said member, ports opening through said member adjacent the Abase of vthe sleeve portion, and atorus of resilient material lencircling the:V sleeve portion'and normally closing said ports. Y

Vll. In a valving and closure member lfor the inner telescoping sectiono a sand-pump a groove to receive a ring of resilient inaterial-adjacent its lower periphery, asleeve portionftopped by a ange portion'ton said member, lports opening through said member, and-a torusof resilient material encircling the sleeve portion to valve said-ports therein, the aforesaid flange'being shaped and of s iich diameter to lpermit lsaid toi'usY to be expanded thereover into operative position andto preventsaidv torus from normally be vcoming dislodged fromaround said sleeve;

In testimony whereof I have hereunto :set

my hand. I

CLARK F. RIGBY.- 

